Disk harrow.



J. J. MGLEAN.

DISK HARROW.

APPLICATION FILED JAN. 21, 1910.

979,782. Patented Dec. 27, 1910.

inrrnnr onerous JOHN JAMES MCLEAN, OF MOOSE JAVV, SASKATCHEWAN, CANADA.

DISK HARROW.

Specification of Letters Patent.

Patented Dec. 27, 1910.

Application filed January 21. 1910. Serial No. 539,394.

'10 all whom it may concern:

Be it known that I, JonN June s MoLmN, of Moose Jaw, in the Province of Saskatcho wan, Dominion of Canada, have invented certain new and useful improvements in Disk Narrows, or. which the following is a specification.

My invention relates to improvcrnents in disk-harrmvs, and the objects of my invcu tion are to secure greater eliicieney in the cutting operation of the burrow, to cause the same lojcut the ground more readily and pulvcrize it more completely: further objects being to provide Simple means for regulating'tho depth of cut and for preventing wind ing of grass and weeds around the spools between the barrows: "further objects still being to provide means for elimimiting the i'uri'ow ordinarily left between two sets oit disks.

[The ordinary disk barrow in operation frequently rolls along the ground and does not revolve fast enough to out a hard surface, such as stubble or sod without several ap' iilications. This diiiiculty is overcome in the present invention by rotating the barrows ata greater speed than that with which they are drawn along, thereby, causing them to out the ground readily and pulverize it more completely. This will also enable the disks to be placed closer together without clogging, and this in turn enables ill! angle at which the disks are set; to he reduced and this reduces draft on the horses.

For complete understanding of the invention, reference must be made to the accompanying specifications and drawings.

in ihe drawings: Figure l is an end elevation of the barrow with the drive wheel partly broken away to more clearly show the working parts. Fig. fl is a plan view of the barrow. Fig. 3 is an enlarged longitudinal section through several of the disks. Fig. -l. is a transverse section through the shafts supporting the harrow disks. Fig. 5 is a sectional detail taken on the line 3, 3, Fig. 2. Fig. (l is a plan view of the face of one of the collars shown in Fig. 5. Fig.7 is nt'vertical section through the end disks of one of the sets of barrows.

In the drawings like characters of reference indicate corresponding parts in each figure.

Referring to the drawings, A and .B rep resent; the driving wheels of any suitable construction, and as shown are supported on I the end oi a transversely extending axle C, to which one or more tongues I) may be at;- tached in the usual way.

I) and F represent two sets o'l' burrow blades oi? usual construction which aroconvergingly inclined toward each other and meet. at substantially the center, the said disks being adjustobly supported. this being :u-complishcd in the tllillntlil'litllt, illustrated by providing billable bracket members (l for each set of disks, each set of brackets being fOIHlCtl with side members it) and 11 which are tiltably supported from the axle (l and from a short transversely extending shu'lt'iL respectively, the shaft 152 being farther reau wardly than the axle t. The shaft 13 sup porting the barrow is preferably :is usual. made square, and formed with oylim'h'icul end portions ll which are journulcd in the the borrows being separated in the usual manner by spools if, the shaft 13 having disks ill on the inner cnds which abut and relieve the brackcts from lateral strain. The :uljustmcnt ol' the bracket members (i is etiectcd by means ol? a lever 'ltl, tiltably supported 'l'roiu the frame ll which connects the tongue l), said lcvcr being formed with a crank l7, connected by a link 19 with the bracket, the lover being held in adjusted position in the usual way. by means oi. an a1'cu ate segment ill) and a latch 90.

In :uwcordnuce with the present invention, each ot' the set of disk barrows are driven in the same direction asthc driving \vhcols,and this is accomplishml by connecting the shaft supporting the burrows by suitable gen ring with the driving wheel, and it maybe hcre mentioned that the term gear as employed herein, is intcndcd to include any form o'l chain friction or gear drive. In the embodiment illustrated a large driving gear 2.1 is curritnl and rotated Will! the driving wheels A or B, and the end of the shaft- 14 has a pinion 22 thereon which is connected to the driving gear 21 by an idler 23 supbracket G.

In order to allow for the inclination of the disks, the teeth 01 the driving gear 21, are preferably beveled slightly as shown, where by, they may mesh with the teeth of the idler 23.

In order to break the furrow ordiniirily formed between the two sets of converging disks, an auxiliary disk 24 Fig. 2, is provided,

extremities ot the side members it and 11,

ported from a stulrsliult 24 journaled in the l rotatably supported from a bracket Fig. 2, secured to one of the brackets G, the torward edge of the said disk being adapted to extend a short distance behind the edges of the innermost disks and at substantially their center. The particular means for rotatably supporting this disk 24 Fig. 2, from the bracket 25, Fig. 2, comprises a bolt 26 extending through the bracket and through washers 27 and 28 on opposite sides of the disk, the Washer 27 being provided with a square projection 29 which extends into a corresponding perforation provided in the disk 26%, the bolt 26 being provided with a shoulder 30 adapted to prevent binding of the bolt against the washers and thereby, permitting free rotation of the disk.

In order to prevent Winding of weeds and grass about the spools between the disks, a plurality of strapsBl are provided extending between the disks and substantially filling the space between, the lower'end of said straps extending around the spools 15,while the upper end extends around a transversely extending rod 31 which is supported at the opposite end by standards 32 secured to the bracket G.

It will be seen that the construction hereinbefore described, enables the disks to be driven in the same direction to that of the movement of the harrow, thereby, causing it to out into the ground and effectively perform its function. The disks may beadjusted very quickly by means of the lever 16, and the furrow between the disks is broken by the disk 24. Any Winding of grass between the disks is prevented by the straps 31, and the mechanism as a whole will be found well adapted to efl ectively perform the Various functions demanded of it.

.As many changes could. be made in the above construction, and many apparently widely different embodiments of my invention within the scope of the claims could be made without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specifications and drawings shall be interpreted as illustrative and'not in a limiting sense.

What I claim as my invention is:

1. A cultivator comprising a transversely extending driving axle, drivin wheels on opposite ends of the axle, a tongue con nected to the axle, a pair of bracket members pivotally supported from the axle and each including a pair of triangular side memoers, links connected to the forward ends of the triangular members, a lever operatively connected to each of said links, a set of disk barrows supported from each bracket and means operatively connecting each set of disks with the driving wheels in such a wayv as to continuously rotate the disks.

2. A cultivator comprising a transversely extending driving axle, driving wheels on opposite ends of the axle, a tongue connected to the axle, a pair of bracket members pivotally supported from the axle and each including a pair of triangular side members, links connected to the forward ends of the triangular members, a lever, operatively connected to each of said links,'a set of disk barrows supported from each bracket, a driving shaft for each set of disks, a pinion on the driving shaft, a driving gear rotated by each driving wheel, and idlers connecting said driving wheels with the pinion, said idlers being supported from the brackets.

8. In a cultivator and in combination an axle, driving wheels thereon, driving gears connected to the driving wheels, two sets of disk harrows, driving shafts for the sets of disk barrows, pivoted brackets mounted on the axle and each having side members supporting one of the sets of disk harrows, one of said side members journaling the shaft at the end of the set of disk harrows and the other side member entering between the enddisk and the second to end disk, a bracket '25 connected to one of the pivoted brackets and extending rearwardly and formed 'with a hook-shaped end, and an auxiliary disk 24: supported. from said hookshaped end.

In witness whereof I'have hereunto set my hand in the presence of two witnesses.

1 JOHN JAMES MoLEAN. Witnesses:

ANNIE E. TAYBERY, A NNA E. Browns. 

